diff options
| -rw-r--r-- | clang/lib/CodeGen/TargetInfo.cpp | 14 | ||||
| -rw-r--r-- | clang/test/CodeGenCXX/x86_64-arguments.cpp | 9 |
2 files changed, 17 insertions, 6 deletions
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp index 6226d213b62..f95b945af4e 100644 --- a/clang/lib/CodeGen/TargetInfo.cpp +++ b/clang/lib/CodeGen/TargetInfo.cpp @@ -1907,16 +1907,18 @@ void X86_64ABIInfo::classify(QualType Ty, uint64_t OffsetBase, if (const VectorType *VT = Ty->getAs<VectorType>()) { uint64_t Size = getContext().getTypeSize(VT); - if (Size == 32) { - // gcc passes all <4 x char>, <2 x short>, <1 x int>, <1 x - // float> as integer. + if (Size == 1 || Size == 8 || Size == 16 || Size == 32) { + // gcc passes the following as integer: + // 4 bytes - <4 x char>, <2 x short>, <1 x int>, <1 x float> + // 2 bytes - <2 x char>, <1 x short> + // 1 byte - <1 x char> Current = Integer; // If this type crosses an eightbyte boundary, it should be // split. - uint64_t EB_Real = (OffsetBase) / 64; - uint64_t EB_Imag = (OffsetBase + Size - 1) / 64; - if (EB_Real != EB_Imag) + uint64_t EB_Lo = (OffsetBase) / 64; + uint64_t EB_Hi = (OffsetBase + Size - 1) / 64; + if (EB_Lo != EB_Hi) Hi = Lo; } else if (Size == 64) { // gcc passes <1 x double> in memory. :( diff --git a/clang/test/CodeGenCXX/x86_64-arguments.cpp b/clang/test/CodeGenCXX/x86_64-arguments.cpp index 64202b4d02c..c7eca2386af 100644 --- a/clang/test/CodeGenCXX/x86_64-arguments.cpp +++ b/clang/test/CodeGenCXX/x86_64-arguments.cpp @@ -212,3 +212,12 @@ int FuncForDerivedPacked(DerivedPacked d) { return d.three; } } + +namespace test11 { +union U { + float f1; + char __attribute__((__vector_size__(1))) f2; +}; +int f(union U u) { return u.f2[1]; } +// CHECK-LABEL: define i32 @_ZN6test111fENS_1UE(i32 +} |
